194087 has 2 divisors, whose sum is σ = 194088. Its totient is φ = 194086.

The previous prime is 194083. The next prime is 194093. The reversal of 194087 is 780491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 194087 - 2² = 194083 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97043 + 97044.

It is an arithmetic number, because the mean of its divisors is an integer number (97044).

2¹⁹⁴⁰⁸⁷ is an apocalyptic number.

194087 is a deficient number, since it is larger than the sum of its proper divisors (1).

194087 is an equidigital number, since it uses as much as digits as its factorization.

194087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 194087 is about 440.5530615034. The cubic root of 194087 is about 57.8982560279.

The spelling of 194087 in words is "one hundred ninety-four thousand, eighty-seven".